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Date: Mon, 17 Jun 2024 19:24:22 -0700
From: John Hubbard <jhubbard@...dia.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Jeff Xu <jeffxu@...omium.org>,
Shuah Khan <shuah@...nel.org>
Cc: Andrei Vagin <avagin@...gle.com>,
Axel Rasmussen <axelrasmussen@...gle.com>,
Christian Brauner <brauner@...nel.org>,
David Hildenbrand <david@...hat.com>,
Kees Cook <kees@...nel.org>,
Kent Overstreet <kent.overstreet@...ux.dev>,
"Liam R . Howlett" <Liam.Howlett@...cle.com>,
Muhammad Usama Anjum <usama.anjum@...labora.com>,
Peter Xu <peterx@...hat.com>,
Rich Felker <dalias@...c.org>,
linux-mm@...ck.org,
linux-kselftest@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>,
John Hubbard <jhubbard@...dia.com>
Subject: [PATCH v3 6/6] selftests/mm: remove local __NR_* definitions
This continues the work on getting the selftests to build without
requiring people to first run "make headers" [1].
Now that the system call numbers are in the correct, checked-in
locations in the kernel tree (./tools/include/uapi/asm/unistd*.h),
make sure that the mm selftests include that file (indirectly).
Doing so provides guaranteed definitions at build time, so remove all of
the checks for "ifdef __NR_xxx" in the mm selftests, because they will
always be true (defined).
[1] commit e076eaca5906 ("selftests: break the dependency upon local
header files")
Acked-by: David Hildenbrand <david@...hat.com>
Cc: Jeff Xu <jeffxu@...omium.org>
Signed-off-by: John Hubbard <jhubbard@...dia.com>
---
tools/testing/selftests/mm/hugepage-mremap.c | 2 +-
.../testing/selftests/mm/ksm_functional_tests.c | 8 +-------
tools/testing/selftests/mm/memfd_secret.c | 14 +-------------
tools/testing/selftests/mm/mkdirty.c | 8 +-------
tools/testing/selftests/mm/mlock2.h | 1 +
tools/testing/selftests/mm/pagemap_ioctl.c | 2 +-
tools/testing/selftests/mm/protection_keys.c | 2 +-
tools/testing/selftests/mm/uffd-common.c | 4 ----
tools/testing/selftests/mm/uffd-stress.c | 16 +---------------
tools/testing/selftests/mm/uffd-unit-tests.c | 14 +-------------
10 files changed, 9 insertions(+), 62 deletions(-)
diff --git a/tools/testing/selftests/mm/hugepage-mremap.c b/tools/testing/selftests/mm/hugepage-mremap.c
index c463d1c09c9b..ada9156cc497 100644
--- a/tools/testing/selftests/mm/hugepage-mremap.c
+++ b/tools/testing/selftests/mm/hugepage-mremap.c
@@ -15,7 +15,7 @@
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
-#include <unistd.h>
+#include <asm-generic/unistd.h>
#include <sys/mman.h>
#include <errno.h>
#include <fcntl.h> /* Definition of O_* constants */
diff --git a/tools/testing/selftests/mm/ksm_functional_tests.c b/tools/testing/selftests/mm/ksm_functional_tests.c
index 37de82da9be7..5cbf3f783d6c 100644
--- a/tools/testing/selftests/mm/ksm_functional_tests.c
+++ b/tools/testing/selftests/mm/ksm_functional_tests.c
@@ -11,7 +11,7 @@
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
-#include <unistd.h>
+#include <asm-generic/unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
@@ -369,7 +369,6 @@ static void test_unmerge_discarded(void)
munmap(map, size);
}
-#ifdef __NR_userfaultfd
static void test_unmerge_uffd_wp(void)
{
struct uffdio_writeprotect uffd_writeprotect;
@@ -430,7 +429,6 @@ static void test_unmerge_uffd_wp(void)
unmap:
munmap(map, size);
}
-#endif
/* Verify that KSM can be enabled / queried with prctl. */
static void test_prctl(void)
@@ -665,9 +663,7 @@ int main(int argc, char **argv)
exit(test_child_ksm());
}
-#ifdef __NR_userfaultfd
tests++;
-#endif
ksft_print_header();
ksft_set_plan(tests);
@@ -694,9 +690,7 @@ int main(int argc, char **argv)
test_unmerge();
test_unmerge_zero_pages();
test_unmerge_discarded();
-#ifdef __NR_userfaultfd
test_unmerge_uffd_wp();
-#endif
test_prot_none();
diff --git a/tools/testing/selftests/mm/memfd_secret.c b/tools/testing/selftests/mm/memfd_secret.c
index 9a0597310a76..74c911aa3aea 100644
--- a/tools/testing/selftests/mm/memfd_secret.c
+++ b/tools/testing/selftests/mm/memfd_secret.c
@@ -17,7 +17,7 @@
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
+#include <asm-generic/unistd.h>
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
@@ -28,8 +28,6 @@
#define pass(fmt, ...) ksft_test_result_pass(fmt, ##__VA_ARGS__)
#define skip(fmt, ...) ksft_test_result_skip(fmt, ##__VA_ARGS__)
-#ifdef __NR_memfd_secret
-
#define PATTERN 0x55
static const int prot = PROT_READ | PROT_WRITE;
@@ -334,13 +332,3 @@ int main(int argc, char *argv[])
ksft_finished();
}
-
-#else /* __NR_memfd_secret */
-
-int main(int argc, char *argv[])
-{
- printf("skip: skipping memfd_secret test (missing __NR_memfd_secret)\n");
- return KSFT_SKIP;
-}
-
-#endif /* __NR_memfd_secret */
diff --git a/tools/testing/selftests/mm/mkdirty.c b/tools/testing/selftests/mm/mkdirty.c
index b8a7efe9204e..1db134063c38 100644
--- a/tools/testing/selftests/mm/mkdirty.c
+++ b/tools/testing/selftests/mm/mkdirty.c
@@ -9,7 +9,7 @@
*/
#include <fcntl.h>
#include <signal.h>
-#include <unistd.h>
+#include <asm-generic/unistd.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
@@ -265,7 +265,6 @@ static void test_pte_mapped_thp(void)
munmap(mmap_mem, mmap_size);
}
-#ifdef __NR_userfaultfd
static void test_uffdio_copy(void)
{
struct uffdio_register uffdio_register;
@@ -322,7 +321,6 @@ static void test_uffdio_copy(void)
munmap(dst, pagesize);
free(src);
}
-#endif /* __NR_userfaultfd */
int main(void)
{
@@ -335,9 +333,7 @@ int main(void)
thpsize / 1024);
tests += 3;
}
-#ifdef __NR_userfaultfd
tests += 1;
-#endif /* __NR_userfaultfd */
ksft_print_header();
ksft_set_plan(tests);
@@ -367,9 +363,7 @@ int main(void)
if (thpsize)
test_pte_mapped_thp();
/* Placing a fresh page via userfaultfd may set the PTE dirty. */
-#ifdef __NR_userfaultfd
test_uffdio_copy();
-#endif /* __NR_userfaultfd */
err = ksft_get_fail_cnt();
if (err)
diff --git a/tools/testing/selftests/mm/mlock2.h b/tools/testing/selftests/mm/mlock2.h
index 4417eaa5cfb7..1e5731bab499 100644
--- a/tools/testing/selftests/mm/mlock2.h
+++ b/tools/testing/selftests/mm/mlock2.h
@@ -3,6 +3,7 @@
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
+#include <asm-generic/unistd.h>
static int mlock2_(void *start, size_t len, int flags)
{
diff --git a/tools/testing/selftests/mm/pagemap_ioctl.c b/tools/testing/selftests/mm/pagemap_ioctl.c
index 2d785aca72a5..0e18f2ca8d93 100644
--- a/tools/testing/selftests/mm/pagemap_ioctl.c
+++ b/tools/testing/selftests/mm/pagemap_ioctl.c
@@ -15,7 +15,7 @@
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <math.h>
-#include <asm/unistd.h>
+#include <asm-generic/unistd.h>
#include <pthread.h>
#include <sys/resource.h>
#include <assert.h>
diff --git a/tools/testing/selftests/mm/protection_keys.c b/tools/testing/selftests/mm/protection_keys.c
index 48dc151f8fca..eaa6d1fc5328 100644
--- a/tools/testing/selftests/mm/protection_keys.c
+++ b/tools/testing/selftests/mm/protection_keys.c
@@ -42,7 +42,7 @@
#include <sys/wait.h>
#include <sys/stat.h>
#include <fcntl.h>
-#include <unistd.h>
+#include <asm-generic/unistd.h>
#include <sys/ptrace.h>
#include <setjmp.h>
diff --git a/tools/testing/selftests/mm/uffd-common.c b/tools/testing/selftests/mm/uffd-common.c
index 7ad6ba660c7d..717539eddf98 100644
--- a/tools/testing/selftests/mm/uffd-common.c
+++ b/tools/testing/selftests/mm/uffd-common.c
@@ -673,11 +673,7 @@ int uffd_open_dev(unsigned int flags)
int uffd_open_sys(unsigned int flags)
{
-#ifdef __NR_userfaultfd
return syscall(__NR_userfaultfd, flags);
-#else
- return -1;
-#endif
}
int uffd_open(unsigned int flags)
diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c
index f78bab0f3d45..0abb9af0fc7f 100644
--- a/tools/testing/selftests/mm/uffd-stress.c
+++ b/tools/testing/selftests/mm/uffd-stress.c
@@ -33,11 +33,9 @@
* pthread_mutex_lock will also verify the atomicity of the memory
* transfer (UFFDIO_COPY).
*/
-
+#include <asm-generic/unistd.h>
#include "uffd-common.h"
-#ifdef __NR_userfaultfd
-
#define BOUNCE_RANDOM (1<<0)
#define BOUNCE_RACINGFAULTS (1<<1)
#define BOUNCE_VERIFY (1<<2)
@@ -466,15 +464,3 @@ int main(int argc, char **argv)
nr_pages, nr_pages_per_cpu);
return userfaultfd_stress();
}
-
-#else /* __NR_userfaultfd */
-
-#warning "missing __NR_userfaultfd definition"
-
-int main(void)
-{
- printf("skip: Skipping userfaultfd test (missing __NR_userfaultfd)\n");
- return KSFT_SKIP;
-}
-
-#endif /* __NR_userfaultfd */
diff --git a/tools/testing/selftests/mm/uffd-unit-tests.c b/tools/testing/selftests/mm/uffd-unit-tests.c
index 21ec23206ab4..b3d21eed203d 100644
--- a/tools/testing/selftests/mm/uffd-unit-tests.c
+++ b/tools/testing/selftests/mm/uffd-unit-tests.c
@@ -5,12 +5,11 @@
* Copyright (C) 2015-2023 Red Hat, Inc.
*/
+#include <asm-generic/unistd.h>
#include "uffd-common.h"
#include "../../../../mm/gup_test.h"
-#ifdef __NR_userfaultfd
-
/* The unit test doesn't need a large or random size, make it 32MB for now */
#define UFFD_TEST_MEM_SIZE (32UL << 20)
@@ -1554,14 +1553,3 @@ int main(int argc, char *argv[])
return ksft_get_fail_cnt() ? KSFT_FAIL : KSFT_PASS;
}
-#else /* __NR_userfaultfd */
-
-#warning "missing __NR_userfaultfd definition"
-
-int main(void)
-{
- printf("Skipping %s (missing __NR_userfaultfd)\n", __file__);
- return KSFT_SKIP;
-}
-
-#endif /* __NR_userfaultfd */
--
2.45.2
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